Engine stats - duckduckgo

Engine name	Scores	Result count	Response time	Reliability
duckduckgo				0

Errors and exceptions

Exception	IndexError	Percentage	100
Filename	searx/engines/duckduckgo.py:99
Function	get_vqd
Code	value = doc.xpath("//input[@name='vqd']/@value")[0]

**Version of SearXNG, commit number if you are using on master branch and stipulate if you forked SearXNG**
Repository: https://github.com/searxng/searxng
Branch: master
Version: 2023.9.23+827af00d9+dirty

**How did you install SearXNG?**

**What happened?**

**How To Reproduce**

**Expected behavior**

**Screenshots & Logs**

**Additional context**

**Technical report**

Error
  * Error: IndexError
  * Percentage: 100
  * Parameters: `()`
  * File name: `searx/engines/duckduckgo.py:99`
  * Function: `get_vqd`
  * Code: `value = doc.xpath("//input[@name='vqd']/@value")[0]`

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